Exercizer having adjustable mechanism

Abstract

An exercizer includes a pair of rods having a front portion rotatably supported on a base with a pair of cranks and having a rear portion slidably supported on the base, a pair of bars pivotally secured to a front portion of the base, a pair of levers each having a foot support and having a front portion pivotally secured to the bars and each having a rear end slidably engaged on the rods, for allowing the foot supports to be moved in a reciprocating action. The rods are movably supported on the rear portion of the base such that the foot supports may be lowered.

I claim:  
     
       1. An exerciser comprising: 
       a base including a front portion having a pair of cranks provided thereon, and including a rear portion having a pair of tracks provided thereon,  
       a pair of rods including a front end rotatably secured to said cranks respectively, and including a rear portion movably and slidably supported on said tracks respectively,  
       a pair of bars pivotally secured to said front portion of said base, said bars each including a lower portion and a middle portion,  
       a pair of levers each including a foot support provided thereon, and each including a front portion pivotally secured to said middle portions of said bars, and each including a rear portion slidably engaged on said rods respectively, for allowing said levers and said foot supports to be moved in a reciprocating action, and  
       means for coupling said bars to said rods,  
       said rear portions of said rods being movably supported on said tracks respectively without being elevated, for lowering said foot supports.  
     
     
       2. The exerciser according to  claim 1 , wherein said rear portions of said rods each includes a wheel rotatably supported on said tracks respectively. 
     
     
       3. The exerciser according to  claim 1 , wherein said coupling means includes a pair of links having a rear end pivotally secured to said rods respectively, and having a front portion pivotally coupled to said bars respectively. 
     
     
       4. The exerciser according to  claim 3  further comprising means for adjusting said front portions of said links relative to said bars respectively in order to adjust said foot supports relative to said rods. 
     
     
       5. The exerciser according to  claim 4 , wherein adjusting means includes two sleeves slidably engaged on said bars respectively, said front portions of said links are pivotally secured to said sleeves respectively with a pivot pole. 
     
     
       6. The exerciser according to  claim 4 , wherein said adjusting means includes two slides slidably received in said bars respectively, said front portions of said links are pivotally secured to said slides respectively. 
     
     
       7. The exerciser according to  claim 6  further comprising means for moving said slides relative to said bars respectively to adjust said links and said foot supports relative to said bars. 
     
     
       8. The exerciser according to  claim 7 , wherein said moving means includes a motor, means for connecting said motor to said slide to move said slides relative to said bars respectively. 
     
     
       9. The exerciser according to  claim 8 , wherein said moving means further includes a switch provided on top of said bars and coupled to said motor in order to actuate said motor without stopping said exerciser. 
     
     
       10. The exerciser according to  claim 8 , wherein said bars each includes a chamber formed therein for slidably receiving said slides respectively, said connecting means includes a pair of bolts rotatably received in said bars respectively and threadedly coupled to said slides respectively, and said motor is coupled to said bolts for rotating said bolts to move and to adjust said slided along said bars respectively. 
     
     
       11. The exerciser according to  claim 10 , wherein said slides each includes a tube coupled thereto and threadedly engaged with said bolts respectively, said connecting means includes a pinion attached to each of said motors, a gear attached to each of said bolts and coupled to said pinions respectively for coupling said motors to said bolts respectively. 
     
     
       12. An exerciser comprising: 
       a base including a front portion having a pair of cranks provided thereon, and including a rear portion,  
       a pair of rods including a front end rotatably secured to said cranks respectively, and including a rear portion movably and slidably supported on said rear portion of said base,  
       a pair of bars pivotally secured to said front portion of said base, said bars each including a lower portion and a middle portion,  
       a pair of levers each including a foot support provided thereon, and each including a front portion pivotally secured to said middle portions of said bars, and each including a rear portion slidably engaged on said rods respectively, for allowing said levers and said foot supports to be moved in a reciprocating action,  
       a pair of links including a rear end pivotally secured to said rods respectively, and including a front portion pivotally coupled to said lower portions of said bars respectively, and  
       means for adjusting said front portions of said links relative to said bars respectively in order to adjust said foot supports relative to said rods.